“In a letter to her House colleagues, Nancy Pelosi said: ‘President Trump had a temper tantrum for us all to see.’ This is not true,” tweeted the commander-in-chief on Wednesday night. “I was purposely very polite and calm, much as I was minutes later with the press in the Rose Garden. Can be easily proven. It is all such a lie!”

In her letter, Pelosi said Trump walked out of a meeting with Democratic leaders after she suggested that he would be committing a crime by holding back documents from Congress and ordering witnesses not to testify at congressional hearings. She went on to accuse the president of taking part in a “cover-up” — which angered him and prompted the alleged tantrum, her letter says.

“[Trump] threatened to stop working with Democrats on all legislation unless we end oversight of his Administration and he had a temper tantrum for us all to see,” Pelosi wrote.

She said that Democrats “remain committed to an historic infrastructure package” and “will continue to work relentlessly on bold, transformative infrastructure solutions that will create good-paying jobs, regardless of the President’s behavior.”

“We wanted to give the President the opportunity to launch an historic infrastructure initiative that could stand in the pantheon of American history alongside the bold initiatives of Presidents Thomas Jefferson, Theodore Roosevelt, and Dwight Eisenhower,” Pelosi said. “There were those who said that we should not work with the President, but we believe that we must be For The People and create good-paying jobs for American workers. Democrats are here for the country. Sadly, the only job the President seems to be concerned with is his own.”